How to group Objects by property using using collector groupingBy() on top of flatMap() in Java 8

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Peter Schneider
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Published on ● Video Link: https://www.youtube.com/watch?v=iIS-q650jYU


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How to group Objects by property using using collector groupingBy() on top of flatMap() in Java 8
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Tags:
java-stream
groupingby
java
hashmap
collectors